竟然被我蒙对 LOL

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Why Identical Twins Don't Have Identical Fingerprints

Identical, or monozygotic, twins form when a single fertilized egg splits in two after conception. Because they form from a single zygote, the two individuals will have the same genetic makeup. Their DNA is virtually indistinguishable. If your identical twin leaves DNA at a crime scene, the crime lab won't be able to tell the two of you apart with that evidence.

However, fingerprint patterns are not an entirely genetic characteristic. This should be obvious because you don't have the same fingerprint on your left thumb as your right thumb even though you have the same genes coding for it. Just try to open your locked iPhone with Touch ID with the wrong finger. It doesn't work.

Each of your fingers has a similar pattern of whorls, loops, and ridges, but each is unique.

 

The police take prints of all 10 fingers in order to match them to any found at a crime scene. A single finger won't do.

Scientists love to use this topic as an example of the old "nature vs. nurture" debate. Fingerprinting, along with other physical characteristics, is an example of a phenotype – meaning that it is determined by the interaction of an individual's genes and the developmental environment in the uterus.”